BUSCADOR RECOLECTA

The item is made of 2 files, of which 1 is the dataset and the other include a small description of the measured variables.-- Dataset contributed to the Project Carbochange, This dataset gathers discrete measurements of CO2 (pH and alkalinity) and hydrographic variables (salinity, temperature, dissolved oxygen, nitrate, phosphate and silicate) obtained during the cruise 24N_Malaspina carried out from 28 January to 14 March 2011. pH was measured spectrophotometrically following the Clayton and Byrne (1993). This method consists on adding a dye solution to the seawater sample, so that the ratio between two absorbances at two different wavelengths is proportional to the sample pH. Alkalinity was measured using an automatic potentiometric titrator Titrando 809 Metrohm, with a Metrohm 6.0232.100 combination glass electrode and a Pt-1000 probe for temperature measurement following the methodology given by Pérez and Fraga (1987). Dissolved oxygen was analyzed following the widely applied Winkler method. Determinations of nitrate, phosphate and silicate were carried out following methods described by Hansen and Grassoff (1983) Salinity and Temperature were recorded with a CTD probe, Project MALASPINA (CSD2008-00077) supported by Ministerio de Ciencia e Innovación, and project CARBOCHANGE (264879) supported by European Commission, No

CONSOLIDER-MALASPINA-2 Cruise (29SG20110127) carried out on the Research Vessel Sarmiento de Gamboa in 2011, Expedition within the Malaspina project. The expedition will navigate through a section of the ocean that runs along the 24º North parallel. The objective is to collect samples that predict more about climate change. The team of researchers has traveled the 24º North parallel and has measured the temperature, salinity, oxygen, alkalinity and the PH of the ocean, among other parameters. This latitude has been chosen because the heat flow that transports the Atlantic Ocean to the north is maximum. "Any variation in heat transport has very important consequences on the climate of the European continent,"